Answer:A triangle is a three-sided figure whose angles always add up to 180°. Thus, ∠x +∠y + ∠z = 180°.
The largest angle of a triangle is opposite its longest side.
On the SAT, the triangle to the left would be referred to as triangle abc or ∆abc.
To find the perimeter of the triangle, add up all the sides (a + b + c).
To find the area of any triangle, use the formula, (1⁄2)bh. The height must be perpendicular to the base.
Two triangles are similar if their angles have the same measure. The triangles therefore have the same shape, and their sides will be in proportion.
Triangles are said to be congruent if they have the same shape and size.
Equilateral Triangles
Equilateral Triangle
An equilateral triangle has three equal sides. Thus: a = b = c.
An equilateral triangle has three angles are also equal. Thus, ∠x = ∠y = ∠z.
Since the angles of a triangle always add up to 180°, each angle of an equilateral triangle must also equal 60°. Thus, ∠x = ∠y = ∠z = 60°.
Step-by-step explanation:
Answer:
8.242
Step-by-step explanation:
we can use tan for this
solve it with calculator, and you will get approximately 8.242
Answer: -7/9
Step-by-step explanation: To identify the slope of this line, first notice that this equation is in standard form which is Ax + By = C.
To find the slope, we need to solve for our variable <em>y</em>.
We first need to identify what is happening to our variable <em>y</em>. You can notice that it's being multiplied by 9 and is being added by 7x because 7x is a +7x so we're adding the 7x to the 9y.
So the first thing we do is undo addition and subtraction to our variable.
On the left the -7x's cancel and we are left with 9y. on the right, we do not want to write 45 - 7x because we always want to keep our variable in front of our constant. So I will just write that as 9y = -7x + 45.
Now we can divide everything by 9 in order to get <em>y</em> by itself.
This leaves us with <em>y = -7/9x + 5</em>.
Now our slope is the multiplier or the coefficient of the <em>x</em> term which in this case is -7/9. So the slope is -7/9.
Answer:
b
Step-by-step explanation:
